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FLOW SWITCH
Fig. 23 — Flow Switch
a30-4138
BAD
BAD
GOOD
GOOD
Fig. 24 — Tank Baffling
a30-3185
PT
PT
T1
T2
FS
PP
PP
D
D
V
D
PT
PT
Chilled
Water In
Chilled
Water Out
Heater
Heater
E
PT
Air Separator with Vent*
Strainer/Suction Guide
Pump
Combination Valve
Isolation Valve*
Pressure Reducing
Fill Valve*
Flexible Connections*
Pressure Relief*
HYDRONIC PUMP PACKAGE
INSIDE
UNIT
OUTSIDE
UNIT
20 Mesh Stainer**
LEGEND
*Field-supplied and installed.
†Factory-installed option.
**Required for open loop systems.
D—Drain,
3
/
4
-in. NPT
D — Drain,
1
/
4
-in. NPT
E—Expansion Tank Connection,
3
/
4
-in. NPT
FS — Flow Switch
PP — Pipe Plug,
1
/
4
-in. NPT
PT — Pressure/Temperature Tap
T1 — Leaving Water Thermistor
T2 — Entering Water Thermistor
V—Vent,
1
/
4
-in. NPT
Indicates items provided with the
optional hydronic pump package.
Fig. 25 — Typical Piping Diagram on 30XA Units with Hydronic Package — Single Pump
a30-4414